Improvement in door-bolts



UNITED STATES PATENT EEIGE FREDERICK W. BROCKSIEPER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT 85 CO.,OF SAME FLACE.

IMPROVEMENT IN DQOR-BOLTS.

Specification forming part of Letters Patent No. 158,241, dated December 29, 1874; application tiled November 6, 1874.

To all whom it may concern Be it known that l, FREDERICK W. BROCK- SIEPER, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Door-Bolt; `and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, front view; Fig. 2, side view.

This invention relates to an improvement in that class of bolts for doors commonly called barrel-bolts, and such as are adapt ed for both right and left hand doors.

In this class of bolts, as heretofore constructed, there has usually been a shoulder formed at each extreme ot' the movement of the bolt, so that to throw the bolt tosecure the door it'has been necessary to turn the bolt to raise the knob from the shoulder before the bolt could be thrown into the locking position.,

The object of this invention is to construct the barrel so that this first necessary turning of the bolt may be avoided, and yet preserve the locking shoulder forward; and it consists in forming the barrel with an incline upon both sides of the bolt from the withdrawn position rising to the locking-shoulder, so that a pressure applied to throw the bolt will cause the necessary turning of the bolt to pass over the lockingshoulder, one of the inclines serving for a right-hand and the other for a left-hand door.

A is the base ot the barrel; B, the extreme or closed portion of the barrel, substantially as in the usual construction, and between these two points the barrel is open, also in the usual manner. C is the bolt, set into the barrel, and provided with the knob or handle D, by which to move the bolt, also in the usual manner. E is the recess in the side of the barrel, into which the handle drops to lock the bolt when thrown out. From this recess E the sides F incline downward to the shoulder or stop a. This stop o serves to arrest the bolt when it is withdrawn. The bolt in its place ot' rest lies at the lower point of the incline F, as in Fig. l.

Vhen it is desired to throw the bolt to secure the door, simply press the handle D forward, which will cause it to pass up the in-V oline, the bolt turning' in such movement uutil the handle or knob passes over the incline, as denoted in broken lines, and falls into the lockingrecess. E.

The bolt is placed upon 4the door in the usual manner, the edge of which will turn the nose of the bolt to the right or left, as the case may be. In one case one of the inclines is used, and in the other case the other 5 but in both cases it is the lower incline.

Thus, the first turning of the bolt is made automatic-that is to say, the incline gives to the bolt a combined longitudinal and rotative movement.

The incline is sufficient to prevent the bolt jarring or working outward by the swinging of the door.

I claim- In a barrel-bolt, substantially such as described, the incline F in the barrel on both sides of the bolt, and in rear of the look ing-recess E, substantially as and for the purpose specified.

E. w. BEooKsIErEE.

Witnesses:

B. F. RYDER, C. W. BURDETT. 

